List of top Physics Questions on Current electricity asked in KCET

What will be the reading in the voltmeter and ammeter of the circuit shown ?

In the following circuit what are P and Q :

In a potentiometer experiment, the balancing point with a cell is at a length 240 cm. On shunting the cell with a resistance of 2 $\Omega$, the balancing length becomes 120 cm. The internal resistance of the cell is

Kichhoff?s junction rule is a reflection of

The readings of ammeter and voltmeter in the following circuit are respectively

In metre bridge experiment, with a standard resistance in the right gap and a resistance coil dipped in water (in a beaker) in the left gap, the balancing length obtained is $?l?$. If the temperature of water is increased, the new balancing length is

The value of $I$ in the figure shown below is

Effective resistance between $A$ and $B$ in the following circuit

In the following network potential at $'O'$

Variation of resistance of the conductor with temperature is as shown .The temperature co-efficient $(\alpha)$ of the conductor is

Mobility of free electrons in a conductor is

Four identical cells of emf $E$ and internal resistance $r$ are to be connected in series. Suppose if one of the cell is connected wrongly, the equivalent emf and effective internal resistance of the combination is

A tuned amplifier circuit is used to generate a carrier frequency of $2\, MHz$ for the amplitude modulation. The value of $\sqrt{LC}$ is

A carbon film resistor has colour code Green Black Violet Gold. The value of the resistor is

In the circuit diagram ,heat produces in $R, 2R$ and $1.5 \,R$ are in the ratio

In the circuit $R_1 = R_2$.The value of $E$ and $R_1$ are ________($E-EMF,R_1$-resistance)

Copper and Germanium are cooled from room temperature to $100\, K$. Then the resistance of

In this circuit, the value of $I_2$, is

In the circuit shown, the currents $i_1$ and $i_2$ are

A conductor wire having $10^{29}$ free electrons/$m^{3}$ carries a current of $20\,A$. If the cross-section of the wire is $1\,mm^{2}$, then the drift velocity of electrons will be ....... $(e\, =\, 1.6 \times10^{-19}C).$

In the Wheatstone's network given below $P=10 \, \Omega$ $Q=20 \, \Omega$ $R=15 \, \Omega$ $S=30 \, \Omega$ The current passing through the battery (of negligible internal resistance) is

A battery of emf $10\, V$ and internal resistance $ 3\,\Omega $ is connected to a resistor. The current in the circuit is $0.5\, A$. The terminal voltage of the battery when the circuit is closed is

If the potential difference across the internal resistance $r_1$ is equal to the emf $E$ of the battery, then

By using only two resistance coils-singly, in series, or in Parallel-one should be able to obtain resistances of $3, 4, 12$ and $16$ ohms. The separate resistances of the coil are